Description
Thomson SPB 10 OPN Super Open Pillow Block Linear Rail System 48" 4-Block
This is a complete Thomson Industries SPB 10 OPN Super Open Pillow Block linear rail assembly consisting of four pillow blocks mounted on two parallel 48-inch support rails. The SPB 10 OPN is a 1-inch (Size 10) open-bottom pillow block designed to ride on Thomson 60-Case hardened and ground linear shafting, providing smooth, low-friction linear motion in one axis. The open (bottom-clearance) design allows mounting in orientations where a closed pillow block cannot be used, and the aluminum rail base provides a rigid, bolt-down mounting surface for the shaft.
Specifications & What's Included
- Manufacturer: Thomson Industries Inc. — Port Washington, NY, USA
- Model: SPB 10 OPN (Super Open Pillow Block, Size 10)
- Shaft/Rail Diameter: 1 inch (25.4 mm) — Thomson Size 10
- Bearing Style: Super Open — open-bottom housing for clearance mounting
- Number of Pillow Blocks: 4 (two per rail)
- Rail Type: Thomson 60-Case hardened steel shaft on extruded aluminum support rail
- Rail Length: 48 inches (approx. 1,219 mm) per rail
- Number of Rails: 2 (parallel dual-rail configuration)
- Pillow Block Mounting: Four-bolt pattern on each block
- Rail Mounting: Countersunk holes along aluminum base extrusion
- Country of Manufacture: USA
Applications
Thomson pillow block linear rail systems are a standard component in machine building, automation, and industrial motion control. The SPB series with aluminum support rail (sometimes called a "supported rail" or "60-Case on SupportRail") is used where the shaft must span a distance and be supported along its length rather than only at the ends — this prevents shaft deflection under load and allows longer travel without sagging. Common applications include gantry systems, CNC router axes, pick-and-place machines, printing and cutting machinery, assembly automation, and laboratory positioning stages. The open-bottom (OPN) variant is especially useful in inverted or side-mounted orientations. Thomson Industries has manufactured this style of precision linear motion component for decades, and the SPB 10 series remains a widely used size in small-to-medium machine designs. Replacement blocks and compatible shafting are still produced, making this a practical drop-in assembly for both new builds and machine refurbishment.
This Thomson SPB 10 OPN Super Open Pillow Block linear rail system has been inspected and appears to be in good used condition. The set includes four pillow blocks mounted on two 48-inch rails. Light surface marks and minor oxidation are visible on the shafts and rail extrusions, consistent with normal use in an industrial setting. The pillow block housings are intact with no visible cracking or deformation, and the blue Thomson labels are present and legible on all four blocks. It was pulled from a working environment where it had previously been in service. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Thomson |
Model: |
SPB 10 OPN |
MPN: |
SPB10OPN |
SKU: |
44099 |
Type: |
Super Open Pillow Block Linear Rail System |
Number of Pillow Blocks: |
4 |
Rail Length: |
48 inches |
Shaft/Rail Diameter: |
1 inch (Size 10) |
Bearing Style: |
Super Open (Open Bottom) |
Configuration: |
Two parallel rails with 2 pillow blocks each |
Rail Type: |
Thomson 60-Case Shaft on Aluminum Support Rail |
Country/Region of Manufacture: |
USA |
Form Factor: |
Dual-Rail Linear Motion Assembly |
Compatible With: |
Thomson 1-inch (25.4mm) 60-Case linear shafting |
Application: |
Linear motion, automation, CNC, machine building |
Condition Notes: |
This Thomson SPB 10 OPN Super Open Pillow Block rail system (4 blocks, 48" rails) has been inspected and is in good used condition. Minor surface oxidation on shafts; housings intact. Pulled from a working environment. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |
